These low cost modules provide an easy solution for remote data acquisition where cabling is impractical or difficult to install. Battery powered with a life of up to 10 years without maintenance, they can be installed in locations where mains power is unavailable, and into hazardous areas such as gas meter enclosures where mains voltage cannot be used. UHF (434MHz) versions have a range of up to 250m and are used with our 4MOD pulse loggers. Each receiver handles up to 3 transmitters and interfaces directly with the 4MOD. VHF (184MHz) versions have a range of up to 1000m and utilise a single receiver handling up to 250 transmitters, connected directly to the host PC. 'Repeater' units to extend the range of both types are available - please contact us for details.